Catalyst for the selective reduction of nitric acid with ammonia
CA 1325418 C · Owner: Degussa Aktiengesellschaft · Inventors: Honnen, Wolfgang; Engler, H. Bernd; Brand, Reinhold
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalyst for the selective reduction of nitric oxide with ammonia from an intimate mixture of at least three metals in the form of their oxides, namely, titanium tungsten and at least, one of vanadium iron, niobium, molybdenum in an atomic ratio of Ti to the other metals of 1:0.001 to 1. A special product obtainable by flame hydrolysis is used as oxide of titanium which is impregnated with solutions of the salts of the other metals dried at elevated temperature and calcined.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.